Smoking has long been known to damage lungs and cause heart disease. But it could also lower your IQ, research has found. Young people who smoke regularly are likely to have markedly lower intelligence levels than those who do not smoke, and, according to the study of 20,000 young adults, the heavier the smoker, the lower the IQ. Those who smoke a pack or more of cigarettes a day averaged an IQ seven and a half points lower than that of those wh ... Jump to full article >>

Cigarette smokers have lower IQs than non-smokers and the more a person smokes, the lower his IQ, according to a new international study. The study of more than 20,000 Israeli military recruits found young men who smoked a pack of cigarettes a day or more had IQ scores that were 7.5 points lower than non-smokers. The research has been backed by Auckland University expert Dr Marewa Glover, who said it was proof of a successful campaign by the to ... Jump to full article >>